The difference of Black Knight and Black Giant

Hi Arabicum Fans;

I have many questions about what difference between "Black Knight" (BK) and "Black Giant" (BG) so I will explain you following with their characters. Black Giant is the first generation of Black Arabicum here and Black Knight (Named by us) is the second generation.

You can find out more about Black Knight from "The Legend of Siam Black Knight" as below. I seperate the difference for each categorized by flower, leaves, caudex, seed pod, and seed.

1. Flowers
BK: Flower is softer pink, one tone petal and special with red stripe in the yellow throat.

BG: Flower is darker pink to almost red. Flower's petal background is pink and also has deep pink border around.


2. Leaves

BK: Leaves are fresh green, long, wider, thicker, hairy and some might have the red middle line.

BG: Leaves are smaller and curve at the end. Leave line is very clear with red middle line or bone. Leave color is soft green.



3. Caudex

BK: Caudex skin is almost black from top branch to caudex base.

BG: Caudex skin is brown or some can be black all caudex as well.

4. Branch

BK: Branch is more black and consist of few internodes.

BG: Branch is black and consists of many distinctive internodes.

5. Seedpod

BK: Bigger and close together.

BG: Smaller and more distant like V-Shape

6. Seed

BK: Seed is longer and bigger size and also the biggest size compared with other Arabicum seeds.

BG: Seed is smaller and round like rugby ball. Some seeds can have hairy at skin.

The Black Giant was developed from Yak Lop Bu Ri. The owner of Lop Bu Ri's Mother plant is Luetenant Piya and he is the one who named this hybrid. He is my close friend and we have studied and worked together on this hybrid for 3 years. He told me that his uncle recieved 2 youngseedlings about 15 years ago from Saudi Arabia. Both of them were grown for 1 years and Mr Piya noticed that one of them got black skin on top branches so he gave this plant as a name of "Yak Dam" as Thai people called til now.

The English name "Yak Dam" is "Black Giant" and use as marketing term. "Yak" means "Giant" and "Dam" means "Black".

Mr Piya simply said "Black Giant" is just Yak Lop Bu Ri which just has black branch skin. Some Yak Bu Ri can have brack branch almost same as Black Giant (Please see the left photo). You can notice all branches are almost the same as Black Giant but flowers are like Yak Lop Bu Ri. I think this could be clear what difference between Black Giant and Black Knight.